William s



W. s. DAVIS. Noiseless Slate-Frame.

No. 223,636. Patented Jan. 20, 18 80.

I JV V'EJV TOR I AT NETS.

"PETERS. PNOTO-LITNDGRAPHER, WASHINGTON D C UNITED STATES PATENT OFFICE.

WILLIAM S. DAVIS, OF HIGHLAND PARK, ILLINOIS, ASSIGNOR TO.EDWIN 'R.HALL, OF SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 223,636, dated, January20, 1880.

Application filed February 8, 1879.

To all whom it may concern Be it known that I, WILLIAM S. DAVIS, ofHighland Park, in the county of Lake and State of Illinois, haveinvented a new and valuable Improvement in SchooLSlates; and I do herebydeclare that the following is a full, clear, and exact description ofthe construction and operation of the same, reference being had to theannexed drawings, making a part of this specification, and to theletters and figures of reference marked thereon.

Figure 1 of the drawings is a representation ofa face of myschool-slate, and Figs. 2 and 3 sectional detail views of the same.

My invention relates to a slate for school and other purposes; and thenovelty consists in the construction and arrangement of parts, as willbe more fully hereinafter set forth.

The object of the invention is to protect all surfaces that can. withordinary handling,

come in contact With the desk, table, 850., with felt, toavoid noiseresulting from concussion.

I am aware that slate-frames have been covered with cloth for a similarpurpose, and that rubber has been used; but in such constructions theyare liable to get out of order.

I am also aware that noiseless material has been cemented or glued tothe frame, the edges of the material entering grooves in the frame,

as shown in Patent No. 213,028, of March 11, 1879, and neither of theseconstructions are herein claimed.

In carrying out my invention I employ an ordinary frame of longitudinalsections glued or jointed together. The sections are diamond- 3 5 shapedor polygonal in cross-section, and each edge is provided with alongitudinal slot, one to receive the edge of the slate proper and theothers adapted to receive felt, which is forced into the slots, and heldtherein by'glu'e, 40

a portion of such felt projecting, as shown.

As an ornamentation, different colors may be used in the felt, asdesired. Referring to the drawings, A represents the frame; a, thelongitudinal slotwhich receives the slate-edge, anda the slots intowhich the felt B is forced, the same being held therein by glue, asshown.

I claim- In a school-slate, the frame composed of the sections A,diamondshapcd in cross-section, the edges of which are provided withslots 0r grooves a a, the grooves a being provided to receive theedgesof the slate and the grooves a to receive strips of felt B, which areglued therein and project therefrom, as and for the purposes set forth.In testimony that I claim the above I have hereunto subscribed my namein the presence of two witnesses. 7

WILLIAM S. DAVIS.

Witnesses: I GEO. B. CUMMINGS,

D. M. ERSKINE, Jr.

